Instructions
Age calculator
How to use
Choose the birth date. The reference date starts as today and can be changed.
Choose the birth date. The reference date starts as today and can be changed.
Supported input
The age depends on whether the birthday has passed. Year age is the difference in years; counting age adds one.
Input example
2000-05-20 (as of 2026-10-13)
Result example
Age 26 · Dragon
Troubleshooting
Values that are not numbers or are out of range are not calculated; the message says what to fix.
Limitations
The zodiac animal follows the solar year, so January and February births may differ from the lunar-year animal. Rules for 29 February birthdays vary.
How it works
From a birth date, finds the age, Korean year and counting ages, zodiac animal and days to the next birthday. The age depends on whether the birthday has passed. Year age is the difference in years; counting age adds one.
Units & precision
The age depends on whether the birthday has passed. Year age is the difference in years; counting age adds one.